Blaine County, OK radon potential

Blaine County is mapped as Zone 3 - Low Potential by EPA — meaning the county-wide average indoor level is predicted below 2 pCi/L. Blaine County sits at the 5th percentile nationally for radon potential — above 5 of every 100 rated counties.

How Blaine County compares

Blaine County, Oklahoma is home to about 8,573 people across 928.463 square miles. Averaged across its land area, Blaine County runs about 9 people per square mile. Within its own EPA zone, Blaine County is bigger by population than 17% of the counties that share it. Blaine County falls in EPA Radon Region 6, one of 503 counties nationally EPA assigns to that same geologic province.

Zone vs. an actual test

Blaine County's predicted average sits below the national indoor average of about 1.3 pCi/L, well under EPA's 4 pCi/L action level. Low doesn't mean zero: EPA's own data shows homes in Zone 3 counties like Blaine County testing above the action level often enough that skipping a test isn't the safe assumption.

If Blaine County tests above the action level

A short-term test kit is the standard first step and typically costs far less than mitigation itself. If a test comes back at or above 4 pCi/L, a radon mitigation system for a typical home runs roughly $800–$2,500 (around $1,200 for a common single-family install), driven mainly by foundation type, not by county.

Find Oklahoma's state radon program

For Blaine County, an ongoing number beats a one-time test - a Airthings radon monitor tracks Blaine County's levels over time. RadonZoneCheck earns a commission there, at no extra cost to you. Code RADONZONE-10OFF takes 10% off at checkout.

Where Blaine County's figures come from

Every figure on this page traces to EPA's own Map of Radon Zones and Census data, documented in the methodology guide. If you're unsure why a low zone still deserves a test, the zone explainer covers that directly.